PERFORMANCE IMPROVEMENT OF AIR CONDITIONER USING CONDENSED WATER FROM EVAPORATOR
The objective of this research was to study the Coefficient of Performance (C.O.P.) of split type air conditioner using condensed water from evaporator to exchange heat with refrigerant at condenser outlet for reducing temperature of refrigerant before entering expansion device. The research was conducted on split type air conditioner which having cooling capacity 12,000 BTU/h at actual operation. The refrigerant was R22. Room temperature was controlled at 25°C. The results of this research were found that refrigerant temperature was decreased at inlet expansion device and outlet compressor. On the other hand, refrigerant temperature was increased at evaporator outlet and compressor inlet. Pressure of the refrigerant was decreased at compressor outlet and condenser inlet, whereas, increased at before compressor and evaporator. The average C.O.P. of the system was increased by 3.79% while the system was installed with device collecting the condensed water from evaporator to reduce refrigerant temperature at condenser outlet.
Adel AE, Kareem JA, Assaad A. Enhancement of the performance characteristics for air conditioning system by using direct evaporative cooling in hot climates, Energy Procedia.2017; 142: 3998-4004.
McQuiston FC, Parker JD. Heating Ventilating and Air Conditioning. 4th ed. United States of America: John Wiley & Sons, 2007.
Michalis GrV, Andronikos EF, Georgios TK. et al. Incorporative evaporative condenser, Applied Thermal Engineering.2007; 27: 823-828.
Nakpipat T, Khumpunyim P, Sindhupak A. Increasing of Air Conditioner Performance by Evaporative Cooling.In Proceeding of the 20th conference of Mechanical Engineering Network of Thailand; 2006, 891-896.
Piankaew A. Expansion of Air-Conditioner Efficiency by Increasing Heat Releasing of Condenser With Water. Master of Science in Industrial Education (electrical engineering), Faculty of Industrial Education and technology, King’s Mongkut University of technology thonburi, 2007.
Prerkshanandana P, Suwapiromchot S. Refrigeration. Thailand: King’s Mongkut Institute of Technology Thonburi, 2002.
Siriwattana C. Refrigeration and Air Condition. 19th ed. Bangkok: Technology Promotion Association (Thailand-Japan), 2010.
Sutalodkal M. Condenser Cooling Of an Air Conditioner Using Air/Water as Transfer Media. Master of engineering (energy management technology), School of energy and materials, King’s Mongkut University of technology thonburi, 2003.
Swatdepan P, Teeboonma U, Thinvongpituk C. Performance Improvement of Air Condition System Liquid Intercooler Heat Exchanger. In Proceeding of the 20th conference of Mechanical Engineering Network of Thailand; 2006: 877-881.
Trihera S. Improvement of Refrigeration Performance of Split Type Air Conditioner Using Heat Exchanger Combined With Balancing of Refrigerant Pressure. Master of Science in Industrial Education (mechanical engineering), Faculty of Industrial Education and technology, King’s Mongkut University of technology thonburi, 2007.
Wang T, Sheng C, Nnanna A.G.A. Experimental investigation of air conditioning system using evaporative cooling condenser, Energy and Building. 2014; 81: 435-443.
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